Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 Black plate (1,1) 2012 Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement M Instruments and Controls . . . . 4-1 Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . . 4-1 Driving and Operating . . . . . . . . 8-1 Driving Information . . . . . . . . . . . . . 8-1 Starting and Operating . . . . . . . . . 8-1 Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2 Towing . . . . . . . . . .
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 ii Black plate (2,1) Introduction The names, logos, emblems, slogans, vehicle model names, and vehicle body designs appearing in this supplement including, but not limited to, GM, the GM logo, Litho in U.S.A. Part No. 2012CNGSUPL A First Printing CHEVROLET, the CHEVROLET Emblem, GMC, the GMC Truck Emblem, SAVANA, and EXPRESS are trademarks and/or service marks of General Motors LLC, its subsidiaries, affiliates, or licensors.
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 Black plate (3,1) Introduction Using this Supplement Index This supplement contains information specific to the unique components of the vehicle. It does not explain everything you need to know about the vehicle. Read this supplement along with the owner manual to learn about the vehicle's features and controls. A good place to look for what you need is the Index in back of this supplement.
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 iv Introduction 2 NOTES Black plate (4,1)
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 Black plate (1,1) Instruments and Controls Instruments and Controls Warning Lights, Gauges, and Indicators Warning Lights, Gauges, and Indicators Fuel Gauge Fuel Gauge . . . . . . . . . . . . . . . . . . . 4-1 Malfunction Indicator Lamp . . . 4-2 4-1 An arrow on the fuel gauge indicates the side of the vehicle the fuel door is on.
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 4-2 Instruments and Controls Malfunction Indicator Lamp This vehicle has been specifically designed to illuminate this indicator when emissions exceed acceptable levels while operating on natural gas fuel. The malfunction indicator lamp comes on to indicate that there is a problem and service is required. Malfunctions often will be indicated by the system before any problem is apparent.
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 Black plate (1,1) Driving and Operating Driving and Operating Driving Information Vehicle Load Limits . . . . . . . . . . . 8-1 Starting and Operating Starting the Engine . . . . . . . . . . . 8-1 Fuel Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2 Filling the Tank . . . . . . . . . . . . . . . . 8-3 Fuel System Leak . . . . . . . . . . . . . 8-5 Towing Trailer Towing . . . . . . . . . . . . . . . . .
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 8-2 Black plate (2,1) Driving and Operating High Altitude Cold Starting An engine is harder to start in cold weather. The thinner air found above 1,600 m (5,000 ft) also makes the vehicle harder to start. The unique properties of CNG makes it even more difficult or impossible to start at high altitudes if temperatures drop below −16°C (4°F). When starting the vehicle in cold weather at high altitudes: . Use the engine heater.
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 Black plate (3,1) Driving and Operating at any other time, shut down the vehicle and have it serviced. It may be possible to hear the fuel flowing while the engine is running if standing close to the pipework or various fuel system components (regulator, filter). This is normal and should not be confused with a hissing sound at fittings that may indicate a fuel leak. Follow the instructions under Fuel System Leak on page 8‑5.
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 8-4 Black plate (4,1) Driving and Operating The maximum fill pressure is 24 800 kPa (3,600 psi). Refuel with a yellow P36 nozzle where available. Using a blue P30 nozzle will fill the tank to approximately 7/8 on the fuel gauge. receptacle, and follow the refueling instructions on the pump or provided by the station operator. To replace the fill valve O-ring: { WARNING 1.
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 Black plate (5,1) Driving and Operating If dirt or other debris is adhering to the inside of the fuel fill valve, gas may leak out after refueling. If you need to add more fuel, do the refueling procedure again. Put the fill valve dust cap on securely and close the fuel filler door.
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 8-6 Black plate (6,1) Driving and Operating 3. The manual shutoff valve is on the inner side of the driver side frame rail halfway between the front and rear tires. A label is on the outside of the vehicle above the manual shutoff valve. Do not remove this label. Turn the lever one‐quarter turn clockwise to turn off. Do not drive the vehicle. The vehicle should be towed to an authorized GM dealer.
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 Black plate (7,1) Driving and Operating Towing Trailer Towing { WARNING The trailer hitch protects the CNG tank in a crash and from road hazards. Damage may result in a rupture or explosion of the CNG tank. You or others could be injured or even killed. If the trailer hitch must be removed for any reason, e.g, tank inspection or vehicle repair, always reinstall the trailer hitch before operating the vehicle.
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 8-8 Driving and Operating 2 NOTES Black plate (8,1)
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 Black plate (1,1) Vehicle Care Vehicle Care General Information General Information Accessories and Modifications Accessories and Modifications . . . . . . . . . . . . . . . . 9-1 Vehicle Storage . . . . . . . . . . . . . . . 9-2 Vehicle Checks Doing Your Own Service Work . . . . . . . . . . . . . . . . 9-2 Fuel System Components . . . . . 9-3 Wheels and Tires Tire Changing . . . . . . . . . . . . . . . . .
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 9-2 Vehicle Care Vehicle Storage In addition to vehicle storage procedures outlined in the owner manual, the following should be done with the vehicle in the event it will not be driven for extended periods of time: . Black plate (2,1) The manual shutoff valve is on the inner side of the driver side frame rail halfway between the front and rear tires. A label is on the outside of the vehicle above the manual shutoff valve.
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 Black plate (3,1) Vehicle Care Fuel System Components { WARNING Tampering with, or improperly maintaining the high-pressure fuel system can cause a dangerous condition in which serious injury or death may result. Never attempt to modify the fuel system, and always have fuel system repaired and maintained by a qualified dealer.
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 9-4 Black plate (4,1) Vehicle Care Manual Shutoff Valve Locate the manual shutoff valve so that it can be found quickly if it is needed. The manual shutoff valve is on the inner side of the driver side frame rail halfway between the front and rear tires. A label is on the outside of the vehicle above the manual shutoff valve. Do not remove this label. To turn off the valve, turn the lever one-quarter turn clockwise.
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 Black plate (5,1) Vehicle Care Wheels and Tires Tire Changing This vehicle does not have a spare tire. See Towing the Vehicle on page 9‑5. Jump Starting { WARNING If the CNG fuel system has a leak, a spark from the jumper cables could ignite the natural gas, causing injury or death. Do not jump start the vehicle if you smell a persistent natural gas odor or hear a continual hissing sound.
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 9-6 Vehicle Care Appearance Care Exterior Care Finish Damage { WARNING Heating the vehicle to above 82°C (180°F) may cause the fuel pressure release device to open and release CNG gas. You could be injured or the vehicle could be damaged. Never cure a painted body repair by heating.
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 Black plate (1,1) Service and Maintenance Service and Maintenance Maintenance Schedule Maintenance Schedule . . . . . . 10-1 Maintenance Records Natural Gas Vehicle (CNG) Service Records . . . . . . . . . . . 10-3 Maintenance Schedule { WARNING The tank shields protect the CNG tank in a crash and from road hazards. Removal of the shields may result in tank damage that could result in a rupture or possible explosion of the tank.
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 10-2 Service and Maintenance See your dealer or other qualified repair facility for required service and maintenance. Your dealer has the necessary training and parts to repair the vehicle. Have the CNG fuel system and tanks inspected if the vehicle has been involved in a collision or fire. The fuel tanks must be replaced 15 years after manufacture. The expiration date of the fuel tanks is on a label on the fuel tanks.
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 Black plate (3,1) Service and Maintenance Maintenance Records Natural Gas Vehicle (CNG) Service Records Vehicle Identification Number (VIN) CNG Tank Information Location Size Capacity In Front Of Rear Axle 254 mm x 1 854 mm (10 in x 73 in) 79.5 L (21.0 gal) Behind Rear Axle (Front) 335 mm x 787 mm (13 in x 31 in) 51.0 L (13.5 gal) Behind Rear Axle (Rear) 335 mm x 813 mm (13 in x 32 in) 54.0 L (14.
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 10-4 Black plate (4,1) Service and Maintenance CNG Fuel Tank Inspection Record Tank Location: Tank Serial Number: Tank Expiration Date: Inspection Interval (Mileage or Years) Inspection Date Inspector Inspector Initials Type of Repair 15 Years N/A N/A N/A Tank Exchanged
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 Black plate (5,1) Service and Maintenance 10-5 CNG Fuel Tank Inspection Record Tank Location: Tank Serial Number: Tank Expiration Date: Inspection Interval (Mileage or Years) Inspection Date Inspector Inspector Initials Type of Repair 15 Years N/A N/A N/A Tank Exchanged
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 10-6 Black plate (6,1) Service and Maintenance CNG Fuel Tank Inspection Record Tank Location: Tank Serial Number: Tank Expiration Date: Inspection Interval (Mileage or Years) Inspection Date Inspector Inspector Initials Type of Repair 15 Years N/A N/A N/A Tank Exchanged
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 Black plate (7,1) Service and Maintenance 10-7 CNG Fuel Tank Inspection Record Tank Location: Tank Serial Number: Tank Expiration Date: Inspection Interval (Mileage or Years) Inspection Date Inspector Inspector Initials Type of Repair 15 Years N/A N/A N/A Tank Exchanged
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 10-8 Service and Maintenance 2 NOTES Black plate (8,1)
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 Black plate (1,1) Technical Data Technical Data Vehicle Data Capacities and Specifications . . . . . . . . . . . . . .
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 11-2 Black plate (2,1) Technical Data Vehicle Data Capacities and Specifications Application CNG Fuel Tank Capacity ¹ ² ¹ At 24.8 MPa (3,600 psi) and 21°C (70°F). ² GGE (Gasoline Gallon Equivalent) Capacities Metric English 87.4L 23.
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 Black plate (1,1) INDEX i-1 A D G Accessories and Modifications . . . . . . . . . . . . . . . . . . 9-1 Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . . 9-6 Driving Vehicle Load Limits . . . . . . . . . . . . 8-1 Gauges Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 B Battery Jump Starting . . . . . . . . . . . . . . . . . . 9-5 E I Engine Check and Service Engine Soon Light . . . . .
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement 2012 i-2 Black plate (2,1) INDEX M Malfunction Indicator Lamp . . . . . 4-2 N Natural Gas Vehicle Service Records . . . . . .10-3 Natural Gas Vehicle (CNG) Service Records . . . . . . . . . . . . . 10-3 S Service Accessories and Modifications . . . . . . . . . . . . . . . . . 9-1 Doing Your Own Work . . . . . . . . . 9-2 Engine Soon Light . . . . . . . . . . . . . 4-2 Service and Maintenance Natural Gas Vehicle (CNG) Service Records .
